Synthetic vs. Natural Opal: How to Spot the Difference Before You Buy
Natural opal forms in cracks and pockets over millions of years; synthetic and imitation material is made in weeks. Learn the visual and...
A Checklist for Buying Loose Opals Online Without Getting Burned
A practical, step-by-step checklist for buying loose opals online: reading listings, judging photos, questioning sellers, and knowing...
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